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Pearson Algebra 2 Common Core, 2011

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Pearson Algebra 2 Common Core, 2011 View details

3. Linear Functions and Slope-Intercept Form

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Exercise 60 Page 79

Substitute the given points into the Slope Formula.

7/5

Practice makes perfect

We can calculate the slope by substituting the given points into the Slope Formula.

m = y_2-y_1/x_2-x_1 Note that it does not matter which point we choose to use for ( x_1, y_1) and ( x_2, y_2), since the result of using the Slope Formula will be the same.

m=y_2-y_1/x_2-x_1

SubstitutePoints

Substitute ( -1/2,-1/2) & ( -3,-4)

m=-4-( -1/2)/-3-( -1/2)

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Add and subtract terms

a-(- b)=a+b

m=-4+1/2/-3+1/2

a = 2* a/2

m=-8/2+1/2/-6/2+1/2

Add fractions

m=-7/2/-5/2

- a/- b=a/b

m=7/2/5/2

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.a /b./.c /d.=a/b*d/c

.a /b./.c /d.=a/b*d/c

m=7/2*2/5

Multiply fractions

m=7*2/2*5

a/b=.a /2./.b /2.

m=7*1/1*5

Multiply

m=7/5

The slope of the line that passes through the given points is 75.

Subchapter links

Lesson Check p.78

Practice and Problem-Solving Exercises p.78-80

Standardized Test Prep p.80

Mixed Review p.80